ESP32 Firmware for Multi-Tap Water Dispenser

I have an MQTT backend and basic ESP32 firmware stub and need an experienced developer to complete/rewrite it into a production-ready solution. Hardware: ESP32 Dev Module, 6× 12V solenoids, 6× YF-S201 flow sensors, MFRC522, MIFARE 1K cards... (Budget: ₹1500 - ₹12500 INR, Jobs: Arduino, Electrical Engineering, Electronics, Embedded Software, Embedded Systems, Firmware Development, Microcontroller, MQTT)